小卷速测(六) 语法填空+阅读B+C+任务阅读
(限时:30分钟)
Ⅰ.[2020·原创] 语法填空
阅读下面材料,在空白处填入适当的内容(1个单词)或括号内单词的正确形式。
5G is widely talked about in our daily lives. What is 5G? Put 1. (simple), 5G is 2.
next-generation wireless network(下一代无线网络) that will give you much faster Internet connections. But because 3. the way it works, it 4. (change) the way lots of other things connect to the Internet, too, like cars and TVs.
Here's what you need to know:
5G promises much 5. (fast) network speeds, 6. means heavy-duty content like video should travel much more quickly to connected devices.
Verizon's(威瑞森公司) 5G network is already providing speeds in excess of(超过) 1 Gbps, or about 10 times the speeds you might 7. (get) on a good day with 4G LTE, the current standard(目前的标准)offered by wireless carriers(运营商) in most places. That means you should be able to download an hour long high-definition(高清的)video in seconds instead of minutes.
5G also means that 8. takes less time for one thing to talk to another. This is important in places like smart 9. (city) that are connecting to smart cars, since information needs to be delivered(传输) quickly. One day, 5G might be able to tell your car that someone is about 10. (run) a red light and that your car needs to slow down. In that situation, you can't have much delay in the network.
Ⅱ. 阅读理解
Passage 1 [2020·原创]
When we talk about how the Earth and the other planets travel around the sun, we say they orbit the sun. Likewise, the moon orbits the Earth. Many artificial satellites(人造卫星) also orbit the Earth.
Satellites can orbit the Earth's equator(赤道) or go over the Earth's North and South Poles…or anything in between. They orbit at a low altitude(高度) of just a few hundred miles above the Earth's surface or thousands of miles out in space.
When it comes to satellites, space engineers have different types of orbits to choose from. The choice of orbit all depends on the satellite's job!
The two GOES weather satellites, for example, have the job of keeping an eye on the weather over North America. They need to “never take their eyes off” any developing situation, such as tropical storms brewing(酝酿) in the Atlantic Ocean. Therefore, they are “parked” in what is called a geostationary orbit. They orbit exactly over the Earth's equator and make one orbit per day. Thus, since the Earth rotates once on its axis per day, the GOES satellite seems to hover over the same spot on the Earth all the time. GOES stands for Geostationary Operational Environmental Satellite.
On the other hand, satellites whose job is to make maps or study all different parts of the Earth's surface need an orbit that comes as close to passing over the North and South Poles as possible. This way, the Earth turns under the satellite's orbit and the Earth does most of the work of traveling! Also, the satellite should be close to the Earth's surface (a few hundred miles up) to get a good view with its imaging and measuring instruments.
1.What orbits the sun? ( )
A.The Earth. B.The moon.
C.Satellites. D.Stars.
2.What is the usage of the two GOES weather satellites? ( )
A.To check tropical storms.
B.To watch the weather.
C.To notice developing situations.
D.To study the surface of the Earth.
3.The satellites of the making maps should travel in an orbit that . ( )
A.is over the Earth's equator
B.is near the Earth's surface
C.is thousands miles out in space
D.is far away from the North Pole
